In the process of how to solve the earthquake resistance of factory buildings, generally, three performances will be considered: members, nodes and supports. There are two general framework systems:

1. Hinge system

2. Rigid joint system

There are also two ways of thinking. One is to improve the rigidity of steel structure materials to resist earthquakes, and the other is to use ductile and flexible steel structures to buffer, absorb and release the pressure during earthquakes to ensure the seismic resistance of buildings.

What are the differences between the two structural systems mentioned in the workshop rental:

1. In terms of structural systems, they are stable systems. In civil buildings, rigid connection systems are mostly used. In industrial buildings, articulated and supported systems are used more, especially in power systems.

2. From the point of view of joint structure and construction, articulated joints are simple in structure and convenient in construction. Most of them are directly connected on site by high-strength bolts. The welding workload is mostly completed in the factory, which is easy to ensure the quality. Rigid joints are relatively complex, and there is a large amount of on-site welding workload. The welding quality is not easy to ensure, and the workload of acceptance is increased.

3. From the economic point of view, the rigid joint system makes full use of the tensile strength of steel, which is more economical than the articulated system.

4. From the seismic point of view, the specifications have not covered the seismic structure, construction, design and use of articulated systems to discuss their advantages and disadvantages.